<div class="form-category form-group">
  <div class="input-group">
    {{ form_row(expense.category, { 'label' : ' ' }) }}
  </div>
</div>
<div class="form-price form-group">
  {{ form_row(expense.price, { 'label' : ' ', 'attr' : {'placeholder' : 'Price', 'class' : 'price'} }) }}
</div>
<div class="form-comment form-group">
  {{ form_row(expense.comment, { 'label' : ' ', 'attr' : {'placeholder' : 'Comment'} }) }}
</div> 
<div class="form-date form-group small-input-expense">
  {{ form_row(expense.date, { 'label' : ' ' }) }}
</div>